The Pearl River flowing through Guangzhou in the cloudy morning. The Pearl River is a composite water system formed by the convergence of Xijiang River, Beijiang River, Dongjiang River and the the Pearl River Delta. It generally originates from the upper source of the Xijiang River, originates from Mount Majong of the Wumeng Mountains in the the Yunnan-Guizhou Plateau, flows through six provinces (regions) of Yunnan, Guizhou, Guangxi, Guangdong, Hunan and Jiangxi, and flows through the north of Vietnam.